Time again for our Website of the Week, when we showcase interesting and innovative online destinations.

As you might have heard, we have a new president here in the United States.

Barack Obama officially became president at noon on Inauguration Day, January 20, which was about the time when the design and content of the White House website flipped from the Bush White House to the Obama administration. To get a handle on a new presidency whose mantra is "change," take a look at its official website, WhiteHouse.gov.

"Together, we know that this is a time of great challenge for the American people," said President Obama. "Difficult days are upon us, and even more difficult days lie ahead. Our nation is at war. Our economy is in great turmoil. And there is so much work that must be done to restore peace and advance prosperity."

That's an excerpt from Barack Obama's last weekly radio and video talk to the American people before his inauguration. WhiteHouse.gov will have the president's address each week from now on.

The site also features historic information about the presidency and about the White House itself, and of course there's information about President Obama's activities and plans for his new administration, including many of the points he mentioned in his inaugural address.

"We will build the roads and bridges, the electric grids and digital lines that feed our commerce and bind us together. We will restore science to its rightful place, and wield technology's wonders to raise health care's quality and lower its cost. We will harness the sun and the winds and the soil to fuel our cars and run our factories. And we will transform our schools and colleges and universities to meet the demands of a new age."